CN219347913U - Liquid level monitoring device - Google Patents

Abstract

The utility model discloses a liquid level monitoring device, which comprises a containing component, wherein an electric control board for processing detection signals and implementing control functions is arranged in the containing component, the containing component is detachably and fixedly connected with a pipeline communicated with the electric control board, a monitoring component for monitoring the liquid level and a vibration component for self-cleaning are arranged on the pipeline, and the monitoring component and the vibration component are in communication connection with the electric control board. In order to solve the problem that the indication of the liquid level monitoring assembly is inaccurate due to the fact that sundries are deposited for a long time, the vibration assembly can vibrate regularly under the control of the electric control plate, attachments attached to the monitoring assembly and the pipeline are made to fall off through vibration, and the self-cleaning effect is achieved.

Description

Liquid level monitoring device

Technical Field

The utility model relates to the technical field of liquid level measurement equipment, in particular to a liquid level monitoring device.

Background

Currently, liquid level measuring devices and techniques are diverse, such as the usual direct visual scale readings, water level sensors made with multiple electrodes disposed at different heights, capacitive strain type water level sensors, and the like. The technical principles of various liquid level measuring means are different, and the testing precision, the reliability and the equipment cost are different. With the gradual maturity of semiconductor technology and electronic technology, integrated signal detection modules are increasingly applied to production practice, and hall elements are mostly adopted as sensors, and the basic principle is as follows: when current flows through the semiconductor thin sheet, electromotive force is generated in the direction perpendicular to the current and the magnetic field, the magnetic field strength is changed due to water level change, and the Hall element outputs different electromotive forces, so that a water level value is obtained.

The common liquid level measuring equipment based on the Hall element comprises a magnetic sensitive element, a magnet corresponding to the magnetic sensitive element, a micro-processing unit electrically connected with the magnetic sensitive element and a floater, wherein the magnet and the floater are integrally arranged in a linkage way. The magnetic sensor is an electronic packaging element sensitive to a magnetic field and is used for converting an input magnetic signal into an electric signal and outputting the electric signal. When the liquid level changes, the position of the magnet changes immediately, and the magnetic sensor senses the change of the magnetic field intensity and sends a corresponding signal, so that the height of the liquid level is judged. However, in this structure, the connection transmission mechanism of the float is complicated, and the resistance generated by the mechanical parts easily causes the position of the float to be inflexible. Moreover, for some specific highly corrosive and high-viscosity liquids, under the condition that the liquid medium is dirty or more impurities are encountered on the connecting part in the mechanical part, the connecting part is easy to scale after being soaked in the liquid medium for a long time, so that the connecting part is insensitive to rotate and is even blocked, and the liquid level monitoring device cannot accurately indicate the liquid level, and the actual measurement effect is affected.

Disclosure of Invention

The utility model aims to overcome the defects that the rotation of a connecting part is insensitive or blocked and the measurement precision is affected due to easy scaling of the traditional liquid level measurement equipment, and provides a liquid level monitoring device, wherein the moving mode of a floater is changed to avoid scaling of a mechanical structure, a self-cleaning function is added, attachments deposited on the floater and a structure body can be removed through the self-cleaning function, and the problem that the indication of the liquid level monitoring device is inaccurate due to long-time deposition of sundries is avoided.

The technical scheme adopted by the utility model is as follows:

the utility model provides a liquid level monitoring device, includes and holds the subassembly, holds being equipped with in the subassembly and being used for handling detection signal and implementing the automatically controlled board of control function, holds the pipeline that the fixedly connected with and its intercommunication can be dismantled to the subassembly, is equipped with on the pipeline and is used for monitoring the high monitoring module of liquid level and is used for self-cleaning vibration subassembly, monitoring module and vibration subassembly and automatically controlled board communication connection.

The working principle of the utility model is as follows: and installing an electric control plate on a positioning bolt in the accommodating assembly, and connecting a power supply and a signal wire on the electric control plate to electrically connect the electric control plate with the power supply. The automatic liquid level monitoring device is characterized in that a pipeline is further arranged on the containing component, one end of the pipeline is communicated with the containing component, the other end of the pipeline is a free end, a monitoring component used for monitoring the liquid level height and a vibration component used for self-cleaning are respectively arranged on the free end, and the monitoring component and the vibration component are in communication connection with the electric control board through cables. In order to solve the problem that the indication of the liquid level monitoring device is inaccurate due to the fact that sundries are deposited for a long time, the vibration assembly can vibrate regularly under the control of the electric control plate, attachments attached to the monitoring assembly and the pipeline fall off due to vibration, and the monitoring assembly can output a correct liquid level height signal.

Further, as one preferable mode, the vibration assembly is an eccentric motor. The eccentric motor is characterized in that an eccentric block is arranged on a rotor shaft of the direct current motor, and exciting force is obtained by utilizing centrifugal force generated by high-speed rotation of the shaft and the eccentric block. The miniature direct current motor adopted by the eccentric motor has small power consumption, is suitable for long-term use, can conveniently adjust the vibration amplitude by changing the eccentric block on the eccentric motor, and can directly change the vibration frequency of the eccentric motor by adjusting the rotating speed so as to improve the applicability of the utility model. Meanwhile, the eccentric motor adopts strong resistance type vibration instead of resonance, so that it has stable amplitude.

Further, one end of the pipeline is communicated with the accommodating assembly, and the other end of the pipeline is a free end; the monitoring component comprises a magnetic sensor fixedly arranged in the free end of the pipeline and a magnetic floater which can move up and down along with the liquid level and is matched with the magnetic sensor. When the liquid level monitoring device is used, the liquid level monitoring device is arranged in a container of liquid to be detected, when the liquid level in the container is higher than that of the magnetic float, the magnetic float floats upwards due to the action of the floating force, the relative distance between the magnetic float and the magnetic sensitive element changes, the magnetism of the magnetic float relative to the magnetic sensitive element also changes, and the electric control board determines the actual height of the magnetic float and the liquid level through the signal change on the magnetic sensitive element.

Further, a positioning rod is arranged on the outer side of the free end of the pipeline, a through hole matched with the positioning rod is formed in the magnetic floater, the magnetic floater is sleeved on the positioning rod and moves along with the liquid level height between the two ends of the positioning rod, and therefore the distance between the magnetic floater and the magneto-sensitive element changes according to the relative height of the magnetic floater. The main body of the magnetic floater is made of a material with small density, and the main body of the magnetic floater is coated with a magnetic material. The whole structure of the magnetic floater is in a ring shape, a ball shape or a capsule shape, a through hole is arranged on the geometric center of the magnetic floater, and the positioning rod passes through the through hole. One end of the positioning rod is fixedly connected with the free end of the pipeline, and the other end of the positioning rod is sleeved with a rubber pad after penetrating through the through hole on the magnetic floater, so as to prevent the magnetic floater from falling off.

Further, the magneto-sensitive element is a hall sensor based on hall effect, and is used for converting an input magnetic signal into an electric signal and outputting the electric signal. The Hall sensor is a Hall switch element outputting high and low levels or a linear Hall element outputting analog electric signals, and changes according to the intensity of the input signals, and the two signals are in linear relation.

Further, a cover plate and a gram head are arranged on the accommodating component, and the cover plate is detachably and hermetically connected with the accommodating component; the electric control board is led out of the cable through the gram head, and the other end of the cable is connected with a power supply. When the electric control board is used, the electric control board can be operated or adjusted by opening the cover board.

Further, as one of preferable schemes, the cover plate is detachably connected with the accommodating component through a stainless steel bolt.

Further, the electric control board is provided with a dial for setting the vibration interval period of the vibration component, and the vibration period of the vibration component can be adjusted by changing the on-off of the two pins on the back surface corresponding to each key on the dial so as to adapt to different liquid media. When the liquid is more easily attached to the device, the frequency of vibration can be properly increased, ensuring the descaling effect.

Further, the two opposite ends of the containing component are respectively provided with a first flange and a second flange, the second flange is detachably connected with the pipeline, and the first flange is used for fixedly mounting the containing component on a container where liquid to be measured is located. The accommodating component is connected with a container where the liquid level to be measured is located through the first flange and then connected with a pipeline through the second flange, at least two cables are arranged in the pipeline, one ends of the cables are connected to the electric control board, the other ends of the cables are respectively connected with the eccentric motor and the Hall sensor, and signal transmission is achieved through the cables.

Further, the pipe includes a pipe connection upper flange connected with the accommodation assembly, a pipe connection lower flange for mounting the magneto-sensitive element and the magnetic float, and a connection portion for connecting the pipe connection upper flange and the pipe connection lower flange. The flange is gone up in the pipe connection, the flange is gone down in the pipe connection and the connecting portion in centre all uses the flange to connect, also can divide simultaneously the branch to disassemble the combination guaranteeing pipeline leakproofness, and connecting portion can be according to the container structure that awaits measuring liquid medium is located and change correspondingly. The vibration component can be installed in the connecting part and also can be installed in the lower flange of the pipe connection, and when the pipe connection is started, the vibration component vibrates and drives the magnetic sensor and the magnetic floater to vibrate, so that the self-cleaning function is realized. As one preferable scheme, the connecting part is a bent corrugated pipe, so that the free end of the pipeline is vertically downward and faces the liquid level to be measured, and the connecting structure of the magnetic floater can be simplified.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model sets up the vibration assembly, namely eccentric motor, remove the attachment deposited on magnetic float, pipeline through vibrating, can avoid the attachment to increase and lead to the inaccurate question of liquid level monitoring device indication, the miniature direct-flow motor that the said eccentric motor adopts consumes little power, suitable for long-term use, and can adjust its vibration amplitude conveniently through changing the eccentric block on the eccentric motor, can change the vibration frequency of the eccentric motor directly through adjusting the rotational speed, the suitability is good;

2. the vibration period of the vibration component, namely the eccentric motor, can be conveniently adjusted through the dialing code on the electric control board so as to adapt to different liquid media;

3. the utility model utilizes the principle of Hall effect, and can measure the liquid level by the magnetic floater floating up and down along with the liquid level, so that the core components, namely the Hall sensor and the vibration component, can finish the measurement without immersing in the liquid, and the service life of the device is greatly prolonged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a schematic diagram of an electrical control board according to the present utility model;

in the accompanying drawings:

1-a containment assembly; 101-a cover plate; 102-gram heads; 103-a first flange; 104-a second flange; 2-an electric control board; 201-dialing; 3-magnetic float; 4-positioning rods; a 5-hall sensor; 6-an eccentric motor; 701-connecting a flange on the pipe; 702-pipe connection lower flange; 703-bent bellows.

Detailed Description

The utility model is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "front", "rear", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances. Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Embodiment one:

as shown in fig. 1 or fig. 2, the embodiment provides a liquid level monitoring device, which comprises a containing component 1 and a power supply, wherein an electric control board 2 for processing detection signals and implementing control functions is arranged in the containing component 1, and the electric control board 2 is fixedly connected in the containing component 1 through a positioning bolt in the containing component 1. The electric control board 2 is connected with a power supply and a signal wire and is electrically connected with the power supply. The liquid level self-cleaning device is characterized in that a pipeline is further arranged on the containing component 1, one end of the pipeline is communicated with the containing component 1, the other end of the pipeline is a free end, a magnetic sensitive element, a magnetic floater 3 which can move up and down along with the liquid level and is matched with the magnetic sensitive element, and a vibration component for self-cleaning, wherein the magnetic sensitive element and the vibration component are in communication connection with a circuit 2 board through a cable.

When in use, the containing assembly 1 of the embodiment is firstly arranged in a container where a liquid medium to be measured is located, and the height of the magnetic floater 3 is kept at a set liquid level. When the liquid level in the container is higher than the magnetic floater 3, the magnetic floater 3 floats upwards due to the action of the buoyancy, the relative distance between the magnetic floater 3 and the magnetic sensitive element changes, the magnetism of the magnetic floater 3 relative to the magnetic sensitive element also changes, and the electric control board 2 determines the actual height of the magnetic floater 3 and the liquid level through the signal change on the magnetic sensitive element.

Meanwhile, in order to solve the problem that the indication of the liquid level monitoring device is inaccurate due to the fact that sundries are deposited for a long time, the vibration assembly can vibrate regularly under the control of the electric control plate 2, attachments attached to the magnetic floater 3 and the pipeline fall off due to vibration, the magnetic floater 3 can smoothly move along with the liquid level, and accordingly correct liquid level signals are sent to the magneto-sensitive element, and the problem that the indication of the liquid level monitoring device is inaccurate due to the fact that the attachments are too many is effectively avoided.

As one preferable aspect, the vibration assembly is an eccentric motor 6. The eccentric motor 6 is a DC motor having an eccentric block mounted on a rotor shaft, and obtains exciting force by using centrifugal force generated by high-speed rotation of the shaft and the eccentric block. The miniature direct current motor adopted by the eccentric motor 6 has small power consumption, is suitable for long-term use, can conveniently adjust the vibration amplitude by replacing the eccentric block on the eccentric motor 6, and directly changes the vibration frequency of the eccentric motor 6 by adjusting the rotating speed. The adjustment of the vibration amplitude and the vibration frequency of the eccentric motor 6 is very convenient. At the same time, the eccentric motor 6 adopts strong-resistance vibration instead of resonance, so that it has stable amplitude.

Embodiment two:

as shown in fig. 1 or fig. 2, the embodiment provides a liquid level monitoring device, which comprises a containing component 1 and a power supply, wherein an electric control board 2 for processing detection signals and implementing control functions is arranged in the containing component 1, and the electric control board 2 is fixedly connected in the containing component 1 through a positioning bolt in the containing component 1. The electric control board 2 is connected with a power supply and a signal wire and is electrically connected with the power supply. The liquid level self-cleaning device is characterized in that a pipeline is further arranged on the accommodating component 1, one end of the pipeline is communicated with the accommodating component 1, the other end of the pipeline is a free end, a magnetic sensitive element, a magnetic floater 3 which can move up and down along with the liquid level and is matched with the magnetic sensitive element, and a vibration component for self-cleaning, wherein the magnetic sensitive element and the vibration component are in communication connection with the circuit 2 board through a cable. The magneto-sensitive element in this embodiment is a hall sensor 5 based on hall effect, and is configured to convert an input magnetic signal into an electrical signal for output. The hall sensor 5 is a hall switching element outputting high and low levels, or a linear hall element outputting analog electric signals, and changes according to the intensity of the input signals, and the two are in a linear relationship.

The free end of the pipeline is also provided with a positioning rod 4 perpendicular to the liquid level of the liquid level to be measured, and the magnetic floater 3 is sleeved on the positioning rod 4 and moves along with the height of the liquid level between two ends of the positioning rod 4. The main body of the magnetic floater 3 is made of a material with small density, and the main body is coated with a magnetic material. The whole structure of the magnetic floater 3 is in a ring shape, a ball shape or a capsule shape, a through hole is arranged on the geometric center of the magnetic floater 3, and the positioning rod 4 passes through the through hole. One end of the positioning rod 4 is fixedly connected with the free end of the pipeline, and the other end of the positioning rod is sleeved with a rubber pad after passing through the through hole on the magnetic floater 3, so as to prevent the magnetic floater 3 from falling off.

Embodiment III:

as shown in fig. 1 or fig. 2, on the basis of the first embodiment or the second embodiment, the accommodating assembly 1 is provided with a cover plate 101 and a glan 102, the cover plate 101 is detachably connected with the accommodating assembly 1 through a stainless steel bolt, and when the cover plate 101 is opened, the electric control plate 2 arranged inside the accommodating assembly 1 can be operated or adjusted. The electric control board 2 is connected with a power supply through a cable led out of the gram head 102. The opposite ends of the containing component 1 are respectively provided with a first flange 103 and a second flange 104, and the containing component 1 is connected with a container where the liquid level to be measured is located through the first flange 103 and then connected with a pipeline through the second flange 104.

Referring to fig. 3, a dial 201 for setting a vibration interval period of the eccentric motor 6 is disposed on the electric control board 2, and the vibration period of the eccentric motor 6 can be adjusted by changing the on-off of two pins on the back surface corresponding to each key on the dial 201, so as to adapt to different liquid media.

The pipe includes a pipe connection upper flange 701 connected to the housing assembly 1, a pipe connection lower flange 702 for mounting the magneto-sensitive element and the magnetic float 3, and a bent bellows 703 for connecting the pipe connection upper flange 701 and the pipe connection lower flange 702. The pipe connection upper flange 701, the pipe connection lower flange 702 and the middle bent corrugated pipe 703 are all connected by using flanges, so that the tightness of the pipeline is ensured, and meanwhile, the pipe connection upper flange, the pipe connection lower flange and the middle bent corrugated pipe 703 can be disassembled and combined in parts. The vibration component can be arranged in the bent corrugated pipe 703 or in the pipe connection lower flange 702, and when the vibration component is started, the vibration component vibrates and drives the magnetic sensor and the magnetic floater 3 to vibrate, so that a self-cleaning function is realized.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a liquid level monitoring device, includes holds subassembly (1), holds and is equipped with in subassembly (1) and is used for handling monitoring signal and implementing control function's automatically controlled board (2), holds the pipeline of subassembly (1) detachable fixedly connected with rather than the intercommunication, its characterized in that is equipped with on the pipeline and is used for monitoring the high monitoring module of liquid level and is used for self-cleaning vibration subassembly, monitoring module and vibration subassembly respectively with automatically controlled board (2) communication connection.

2. The liquid level monitoring device according to claim 1, characterized in that the vibration assembly is an eccentric motor (6).

3. The liquid level monitoring device according to claim 1 or 2, characterized in that one end of the pipe is in communication with the containing assembly (1) and the other end is a free end; the monitoring component comprises a magnetic sensitive element fixedly arranged in the free end of the pipeline and a magnetic floater (3) which can move up and down along with the liquid level and is matched with the magnetic sensitive element.

4. A liquid level monitoring device according to claim 3, characterized in that the outer side of the free end of the pipeline is provided with a positioning rod (4), the magnetic float (3) is provided with a through hole matched with the positioning rod (4), the magnetic float (3) is sleeved on the positioning rod (4) and moves along with the liquid level height between the two ends of the positioning rod (4), and the distance between the magnetic float (3) and the magneto-sensitive element changes according to the relative height of the magnetic float (3).

5. The liquid level monitoring device according to claim 4, wherein the magneto-sensitive element is a hall sensor (5) based on hall effect, which outputs an analog electric signal according to the intensity of an input magnetic signal, and the magnetic signal is in a linear relation with the electric signal.

6. The liquid level monitoring device according to claim 1, wherein the accommodating component (1) is provided with a cover plate (101) and a gram head (102), the cover plate (101) is detachably and hermetically connected with the accommodating component (1), the electric control plate (2) is led out of a cable through the gram head (102), and the other end of the cable is connected with a power supply.

7. The liquid level monitoring device according to claim 6, wherein the electric control plate (2) is provided with a dial (201) for setting a vibration interval period of the vibration assembly.

8. The liquid level monitoring device according to claim 6, characterized in that the cover plate (101) is detachably connected to the receiving assembly (1) by means of stainless steel bolts.

9. The liquid level monitoring device according to claim 1 or 7, wherein the receiving assembly (1) is provided with a first flange (103) and a second flange (104) at opposite ends thereof, the second flange (104) being detachably connected to the pipe, the first flange (103) being adapted to fixedly mount the receiving assembly (1) on a container in which the liquid to be measured is located.

10. The liquid level monitoring device according to claim 9, characterized in that the pipe comprises a pipe connection upper flange (701) connected to the receiving assembly (1), a pipe connection lower flange (702) for mounting the monitoring assembly, and a bent bellows (703) for connecting the pipe connection upper flange (701) and the pipe connection lower flange (702).

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